Enhancing Control Strategies for Brushless DC Motors: A Case Study on Automotive Power Closing Systems

Brushless DC (BLDC) motors have emerged as a preferred choice for industrial applications due to their superior efficiency, durability, and low maintenance compared to conventional brushed DC motors. In the automotive sector, particularly in power closing systems, BLDC motors offer significant advantages over brushed counterparts, including reduced mechanical wear and enhanced performance. This study investigates the functionality and dynamic behavior of BLDC motors tailored for automotive power closing applications, focusing on optimizing control strategies and addressing the limitations of existing systems. The research involved validating BLDC motor control algorithms, emphasizing block and sinusoidal commutation methods. Experiments were conducted to analyze the impact of these algorithms on motor performance, including noise levels, dynamic response to polarity changes, and efficiency under varying load conditions. The developed experimental platform allowed comprehensive testing, including noise measurements and the optimization of control software with enhanced library functions. The findings confirm the potential of BLDC motors to meet automotive power closing requirements, with improvements in noise reduction, efficiency, and operational reliability. This study provides a framework for further advancements in BLDC motor control, contributing to the development of more robust and efficient automotive systems.